Note 10 - Asbestos Related Lawsuits and Claims (Details) - Asbestos Related Lawsuits And Claims [Member] $ in Thousands	6 Months Ended		36 Months Ended
	May 28, 2016 USD ($)	May 30, 2015 USD ($)	Nov. 28, 2015 USD ($)
Lawsuits and claims settled	4	5	25
Settlement amounts	$ 343	$ 438	$ 2,072
Insurance payments received or expected to be received	$ 251	$ 354	$ 1,648